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eps Aur

February 3, 2010: Epsilon Aurigae continues to progress through its first eclipse since 1982-84. Visual and photometric observation means place it at around magnitude 3.7-3.8. Totality was likely reached sometime in January, but it will take some time to analyze the data to establish a specific date. Totality is expected to last about 15 months, but the system is not expected to remain quiet during this time. Small amplitude modulations are being detected which are likely not associated with the eclipse itself. However, their exact source is still debated.

Author's note: This article was written prior to the start of the 2009-2011 eclipse. Epsilon Aurigae was the focus of the AAVSO's Citizen Sky project. Please visit the Citizen Sky web site and get updated and expanded information about this exciting event.